pernicious
1. exceedingly harmful • Syn: baneful, deadly, pestilent • Similar to: noxious • Derivationally related forms: pestilence (for: pestilent), perniciousness, deadliness (for: deadly) 2. working or spreading in a hidden and usually injurious way - glaucoma is an insidious disease - a subtle poison • Syn: insidious, subtle • Similar to: harmful • Derivationally related forms: perniciousness, insidiousness (for: insidious)
|
|